The cultivation of crops is inseparable from the support and nutrition given by the soil, and the fertility of the soil is one of the criteria for measuring the quality of the planted soil. Fertile soils allow crops to extract better nutrients and grow stronger, while crops grown on poorly fertile soils may be malnourished or difficult to root in the soil, leading to increased mortality. It can be seen that the identification of soil fertility is a very important skill for growers, so how can the soil fertility be identified?
First, look at the soil color
Soil with strong fertility is darker; soil with weaker fertility is lighter.
Second, look at the depth of the soil
Soils with strong fertility are generally greater than 60 cm; while soils with weaker fertility are relatively shallow.
Third, look at soil slurry and crack
Soil with strong fertility is not easy to be pulped, soil cracks are many and small, and lean soil with weak fertility is easy to be pulped, easy to be knotted, and soil cracks are small and large.
Fourth, look at soil fertility
The soil with strong fertility is loose and easy to cultivate; while the lean soil with weak fertility is sticky, the farming is time-consuming and laborious.
Fifth, look at soil water retention capacity
The soil with strong fertility is slow to osmosis, and the water can be kept for 6 to 7 days after being filled once; and the lean soil with weak fertility usually does not infiltrate or infiltrate quickly along the crack.
Sixth, look at the ability to maintain fertilizer
The fertile soil has strong fertility, long-term fertilization and long-term fertility, while the soil fertility with weak fertility is relatively weak.
Seven, see the water quality
The soil with strong fertility is slippery and sticky, and there is a big bubble when the sun or the foot is pressed; while the lean soil with weak fertility is light and colorless, the paddy field does not bubble, or the bubble is small and easy to disperse.
This trick is mostly used for paddy fields and aquatic plants, and is not suitable for dryland seedlings.
Eight, watching the night tide phenomenon
The soil with strong fertility has a night tide, dry and wet, not easy to dry and hard, while the lean soil with weak fertility has no night tide, and the soil is hardened.
Nine, look at plants
The fertile soil grows red head sauce, goose grass, valerian, etc., while the lean soil with weak fertility grows cattle grass, ragweed, almond grass, wild orchid, wild onion and so on.
Ten, see animals
Fertility soils include snails, loach, crickets, and large grasshoppers; while lean soils with weak fertility include small ants and large ants.
The above is a method for identifying soil fertility compiled by Huinong. The soil fertility has a great impact on crop planting and yield. The growers should pay attention to the conservation of the soil. The fertile soil may make the crop more effective. .
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